package com.sky.aspect;

import com.sky.annotation.AutoFill;
import com.sky.context.BaseContext;
import com.sky.enumeration.OperationType;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.time.LocalDateTime;

@Aspect
@Component
@Slf4j
public class AutoFillAspect {
    @Pointcut("execution(* com.sky.mapper.*.*(..)) && @annotation(com.sky.annotation.AutoFill)")
    public void autoFillPointCut(){

    }
    @Before("autoFillPointCut() ")
    public  void autoFill(JoinPoint joinPoint) throws NoSuchMethodException, InvocationTargetException, IllegalAccessException {
        System.out.printf("前置拦截");
        MethodSignature methodSignature = (MethodSignature) joinPoint.getSignature();
        AutoFill annotation = methodSignature.getMethod().getAnnotation(AutoFill.class); //获得注解对象
        OperationType value = annotation.value(); // 获得操作类型

        Object[] args = joinPoint.getArgs();
        if(args[0]==null || args.length == 0) return;

        Object entity  = args[0];

        LocalDateTime now = LocalDateTime.now();
        Long currentId = BaseContext.getCurrentId();

        if(value == OperationType.INSERT){
            Method setCreateTime = entity.getClass().getDeclaredMethod("setCreateTime", LocalDateTime.class);
            Method setCreateUser = entity.getClass().getDeclaredMethod("setCreateUser", Long.class);
            Method setUpdateTime = entity.getClass().getDeclaredMethod("setUpdateTime", LocalDateTime.class);
            Method setUpdateUser = entity.getClass().getDeclaredMethod("setUpdateUser", Long.class);

            setCreateTime.invoke(entity,now);
            setUpdateTime.invoke(entity,now);
            setCreateUser.invoke(entity,currentId);
            setUpdateUser.invoke(entity,currentId);
        }else if(value == OperationType.UPDATE){
            Method setUpdateTime = entity.getClass().getDeclaredMethod("setUpdateTime", LocalDateTime.class);
            Method setUpdateUser = entity.getClass().getDeclaredMethod("setUpdateUser", Long.class);

            setUpdateTime.invoke(entity,now);
            setUpdateUser.invoke(entity,currentId);
        }

    }
}
